Jeff Chiu/AP
Microsoft (MSFT) is set to try again to crack the tablet market. It's expected to unveil the Surface 2, despite the underwhelming performance of the original models. It controls just 4 percent of the global market for tablets.

On the other hand, AT&T (T) says it expects record smartphone sales in the current quarter. And Apple (AAPL) is expected to report that its two new smartphone models sold out during their first weekend of availability, even though supplies were said to be limited.

Lockheed Martin (LMT) has won a 4 billion contract to supply equipment to the Pentagon and to the United Arab Emirates. The award is for a missile defense system designed to intercept ballistic missiles. Lockheed says several other U.S. allies have also expressed interest in the system.

And Orbital Sciences (ORB) was forced to delay Sunday's planned rendezvous of its unmanned cargo capsule with the space station due to a software problem. Orbital has spent about $500 million to become NASA second space delivery service. It now expects to complete the mission Tuesday.